package net.satoken.demo.utils;
import java.io.Serializable;
import java.util.List;

/**
 * ajax请求返回Json格式数据的封装
 */
public class AjaxJson implements Serializable {
    private static final long   serialVersionUID     = 1L;  // 序列化版本号
    public static final  int    CODE_SUCCESS         = 200; // 成功状态码
    public static final  int    CODE_ERROR           = 500; // 错误状态码
    public static final  int    CODE_WARNING         = 501; // 警告状态码
    public static final  int    CODE_NOT_JUR         = 403; // 无权限状态码
    public static final  int    CODE_NOT_LOGIN       = 401; // 未登录状态码
    public static final  int    CODE_INVALID_REQUEST = 400; // 无效请求状态码
    public               int    code;       // 状态码
    public               String msg;        // 描述信息
    public               Object data;       // 携带对象
    public               Long   dataCount;  // 数据总数，用于分页

    /** 返回code */
    public int getCode() {
        return this.code;
    }

    /** 给msg赋值，连缀风格 */
    public AjaxJson setMsg(String msg) {
        this.msg = msg;
        return this;
    }

    public String getMsg() {
        return this.msg;
    }

    /** 给data赋值，连缀风格 */
    public AjaxJson setData(Object data) {
        this.data = data;
        return this;
    }

    /** 将data还原为指定类型并返回 */
    public <T> T getData(Class<T> cs) {
        return (T) data;
    }
    // ============================  构建  ==================================

    public AjaxJson(int code, String msg, Object data, Long dataCount) {
        this.code = code;
        this.msg = msg;
        this.data = data;
        this.dataCount = dataCount;
    }

    // 返回成功
    public static AjaxJson getSuccess() {
        return new AjaxJson(CODE_SUCCESS, "ok", null, null);
    }

    public static AjaxJson getSuccess(String msg) {
        return new AjaxJson(CODE_SUCCESS, msg, null, null);
    }

    public static AjaxJson getSuccess(String msg, Object data) {
        return new AjaxJson(CODE_SUCCESS, msg, data, null);
    }

    public static AjaxJson getSuccessData(Object data) {
        return new AjaxJson(CODE_SUCCESS, "ok", data, null);
    }

    public static AjaxJson getSuccessArray(Object... data) {
        return new AjaxJson(CODE_SUCCESS, "ok", data, null);
    }

    // 返回失败
    public static AjaxJson getError() {
        return new AjaxJson(CODE_ERROR, "error", null, null);
    }

    public static AjaxJson getError(String msg) {
        return new AjaxJson(CODE_ERROR, msg, null, null);
    }

    // 返回警告
    public static AjaxJson getWarning() {
        return new AjaxJson(CODE_ERROR, "warning", null, null);
    }

    public static AjaxJson getWarning(String msg) {
        return new AjaxJson(CODE_WARNING, msg, null, null);
    }

    // 返回未登录
    public static AjaxJson getNotLogin() {
        return new AjaxJson(CODE_NOT_LOGIN, "未登录，请登录后再次访问", null, null);
    }

    // 返回没有权限的
    public static AjaxJson getNotJur(String msg) {
        return new AjaxJson(CODE_NOT_JUR, msg, null, null);
    }

    // 返回一个自定义状态码的
    public static AjaxJson get(int code, String msg) {
        return new AjaxJson(code, msg, null, null);
    }

    // 返回分页和数据的
    public static AjaxJson getPageData(Long dataCount, Object data) {
        return new AjaxJson(CODE_SUCCESS, "ok", data, dataCount);
    }

    // 返回，根据受影响行数的(大于0=ok，小于0=error)
    public static AjaxJson getByLine(int line) {
        if (line > 0) {
            return getSuccess("ok", line);
        }
        return getError("error").setData(line);
    }

    // 返回，根据布尔值来确定最终结果的  (true=ok，false=error)
    public static AjaxJson getByBoolean(boolean b) {
        return b ? getSuccess("ok") : getError("error");
    }

    /* (non-Javadoc)
     * @see java.lang.Object#toString()
     */
    @SuppressWarnings("rawtypes")
    @Override
    public String toString() {
        String data_string = null;
        if (data == null) {
        } else if (data instanceof List) {
            data_string = "List(length=" + ((List) data).size() + ")";
        } else {
            data_string = data.toString();
        }
        return "{" + "\"code\": " + this.getCode() + ", \"msg\": \"" + this.getMsg() + "\"" + ", \"data\": " + data_string + ", \"dataCount\": " + dataCount + "}";
    }
}
